how to connect php mysql database..??

Answer 1

don't use mysql_* its fully removed on php7...use PDO for manage database .

Answer 2

mysql_conect useing.

Answer 3

mysql_connect(host,user,password) this information is from your database.

Answer 4

yes

Answer 5

standard rule is to declare it by a variable.
like...
$conn= mysql_connect('host', 'dbname','user','password').

in some local servers like xampp user is always root if you did nt change the permission.